I only pay for machine work,so cant say for assembly labor.Boring and fitting pistons oversize is 50 a hole where I go and about another 50 each cylinder for valve seats after I install guides.
I would never consider sleeving late chief cylinders when good repros are available from Stark or Kiwi and originals in good shape are still around,and a cylinder that needs a sleeve probably has recessed seats and an intake seat almost touching the bore.
I would stay away from the cheaper India cylinders.They lost me when I found out you need to drill out your head bolt holes to match the off pattern jug holes.I don't see the value saving a few hundred per and having all the issues.
Tom